Janin, Amélie; Riche, Pauline; Blais, Jean-François 
ORCID: https://orcid.org/0000-0003-3087-4318; Mercier, Guy; Cooper, Paul A. et Morris, Paul
(2012).
Counter-current acid leaching process for copper azole treated wood waste.
Environmental Technology
, vol. 33
, nº 18.
pp. 2111-2118.
DOI: 10.1080/09593330.2012.660648.
Résumé
This study explores the performance of a counter-current leaching process (CCLP) for copper extraction from copper azole treated wood waste for recycling of wood and copper. The leaching process uses three acid leaching steps with 0.1 M H₂SO₄ at 75°C and 15% slurry density followed by three rinses with water. Copper is recovered from the leachate using electrodeposition at 5 amperes (A) for 75 min. Ten counter-current remediation cycles were completed achieving≥94% copper extraction from the wood during the 10 cycles; 80–90% of the copper was recovered from the extract solution by electrodeposition. The counter-current leaching process reduced acid consumption by 86% and effluent discharge volume was 12 times lower compared with the same process without use of counter-current leaching. However, the reuse of leachates from one leaching step to another released dissolved organic carbon and caused its build-up in the early cycles.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | copper azole; wood waste; treated wood; leaching; copper |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 19 oct. 2018 14:43 |
| Dernière modification: | 18 févr. 2022 20:08 |
| URI: | https://espace.inrs.ca/id/eprint/7255 |
Gestion Actions (Identification requise)
 |
Modifier la notice |